CN106558754A - Antenna structure - Google Patents

Abstract

The invention discloses an antenna structure, comprising: a signal feed-in terminal; a first radiation conductor extending from the signal feed end along a first direction to form a first trapezoidal path with gradually widening; a feed-in ground terminal adjacent to the signal feed-in terminal through a gap; and a second radiation conductor extending from the feed-in ground along a second direction perpendicular to the first direction to form a second trapezoidal path with gradually increased width.

Description

antenna structure

technical field

The invention relates to an antenna structure, in particular to a dipole antenna structure with dual polarization performance.

Background technique

Known dipole antennas and radio frequency devices all use a single-polarized antenna structure, which not only takes up space, but is also suitable for different systems that have different polarization requirements (such as preferring to receive horizontally polarized signals or A system that prefers to receive vertically polarized signals), these antenna structures need to be achieved by changing the placement position of the antenna structure. Even if the use environment is not clear, that is, when the current signal environment is not known in advance whether the vertical signal is strong or the horizontal signal is strong, this kind of antenna structure is likely to cause poor reception or transmission. Therefore, in view of the shortcomings of the known technology, the applicant invented the "antenna structure" of the present invention to improve the above-mentioned shortcomings.

Contents of the invention

The wall-mounted antenna structure with dual polarization performance of the present invention can not only be applied to different systems, but also does not need to invert the direction of the antenna structure to meet different polarization requirements. To put it simply, because the antenna structure of the present invention has both vertical and horizontal polarization functions, even if it is used in an unclear environment, it can easily complete the functions of receiving and transmitting, and is suitable for various wireless transmission devices. In addition, the antenna structure of the present invention can be placed at any position in the system without being limited to the system ground, except that the additional ground terminal required by the known antenna can be avoided.

One aspect of the present invention provides an antenna structure, comprising: a signal feed-in end; a first radiation conductor extending from the signal feed-in end along a first direction, and having a A first width of the feed-in end, a second width adjacent to the first width, and a third width adjacent to the second width; a feed-in ground end adjacent to the signal feed through a first gap an input end; and a second radiating conductor extending from the feed-in ground end along a second direction perpendicular to the first direction, and having a fourth width parallel to the first direction adjacent to the feed-in ground end , a fifth width adjacent to the fourth width, and a sixth width adjacent to the fifth width, wherein: the first width is smaller than the second width, the second width is smaller than the third width, and the fifth width is smaller than the fourth width and the sixth width, a first ratio of the second width to the third width is between 0.75 and 0.8, and a second ratio of the fifth width to the sixth width is between Between 0.75 and 0.8.

Another aspect of the present invention provides an antenna structure, comprising: a signal feed-in end; a first radiation conductor extending from the signal feed-in end to a first position along a first direction; a feed-in ground end, via a first gap adjacent to the signal feed-in end; a second radiation conductor extending from the feed-in ground end to a second position along a second direction perpendicular to the first direction; and a conductor extension , extending from the feed-in ground end along the first direction to a third position, wherein the first radiation conductor is trapezoidal, gradually widens from the signal feed-in end along the first direction, and the second radiation conductor is trapezoidal , gradually widens from the feed-in ground terminal along the second direction.

Yet another aspect of the present invention provides an antenna structure, comprising: a signal feed-in end; a first radiation conductor extending from the signal feed-in end along a first direction to form a first trapezoidal path that gradually widens; a The feed-in ground terminal is adjacent to the signal feed-in terminal through a gap; and a second radiation conductor extends from the feed-in ground terminal along a second direction perpendicular to the first direction to form a tapered A second trapezoidal path.

Description of drawings

The present invention is described in detail by the following drawings to enable a deeper understanding:

Fig. 1 is a front view of the antenna structure of the first embodiment of the present invention.

Fig. 2 is a detailed front view of the antenna structure of the second embodiment of the present invention.

Fig. 3 is a front view of an antenna structure according to a third embodiment of the present invention.

4(a) to 4(c) are front views of the antenna structure at different angles according to the third embodiment of the present invention.

detailed description

The present invention will be fully understood by the description of the following examples, so that those skilled in the art can implement according to the following content, but the implementation of the present invention is not limited to the content described in the following examples.

The present invention is a printed dipole antenna structure used on a substrate (for example, a printed circuit board (Printed Circuit Board, PCB)), wherein the antenna structure is obtained by printing a metal conductor on one side of the substrate , and a signal feed-in terminal and a feed-in ground terminal are connected to the metal conductor, and the other side of the substrate is not printed with a ground metal surface at a position corresponding to the metal conductor. The substrate can be a multi-layer board or a single-layer board that is completely metal-free.

The antenna structure of the present invention at least includes a signal feed-in terminal, a first radiation conductor, a feed-in ground terminal and a second radiation conductor, wherein the lengths of the first radiation conductor and the second radiation conductor are approximately equal to the desired 1/2 of the frequency resonance wavelength is used in the designed frequency band, that is to say, the present invention can control the operating frequency of the antenna structure by adjusting the length.

Please refer to FIG. 1 , which is a front view of an antenna structure 100 according to a first embodiment of the present invention. As shown in FIG. 1, the present invention provides an antenna structure 100 printed on a substrate 101. The antenna structure includes a signal feed-in end 104, a first radiation extending from the signal feed-in end 104 along a first direction O1. The conductor 102, a feed-in ground terminal 105 adjacent to the signal feed-in terminal 104, and a second radiation conductor 103 extending from the feed-in ground terminal 105 along a second direction O2 perpendicular to the first direction O1 , wherein the first radiation conductor 102 and the second radiation conductor 103 are trapezoidal.

The signal feed-in terminal 104 is connected to the feed-in ground terminal 105 via a cable 106, wherein the cable 106 has a feed-in cable connected to the reference line AX2, and the first radiation conductor 102 has a The conductor extension path reference line AX1, wherein there is a reference angle θ1 between the feed cable connection reference line AX2 and the conductor extension path reference line AX1.

In a preferred embodiment, the reference angle θ1 is between 90° and 140°.

In a preferred embodiment, the reference angle θ1 is 130°.

It can be seen from FIG. 1 that the first radiation conductor 102 generates a current path extending along the first direction O1 (as shown by the arrow in FIG. 1 ), that is, it can be used to receive horizontally polarized signals, and the second radiation conductor 103 generates The current path extending along the second direction O2 (as shown by the arrow in FIG. 1 ) can be used to receive vertically polarized signals.

Please refer to FIG. 2 , which is a detailed front view of an antenna structure 200 according to a second embodiment of the present invention. As shown in FIG. 2, the antenna structure 200 includes a substrate 201, a signal feed-in terminal 204, a feed-in ground terminal 205, a first radiation conductor 202, a second radiation conductor 203, and a first radiation conductor extension. 2021, a second radiation conductor extension 2031, and a conductor extension 2032, wherein the signal feed-in end 204, the feed-in ground end 205, the first radiation conductor 203, the second radiation conductor 202, the first The radiation conductor extension 2021 , the second radiation conductor extension 2031 , and the conductor extension 2032 are all disposed on the substrate 201 .

It can be seen from FIG. 2 that the first radiating conductor 202 extends from the signal feeding end 204 along a first direction O1, and has a first width W1 perpendicular to the first direction O1, adjacent to the first width W1. a second width W2 and a third width W3 adjacent to the second width W2, and the second radiation conductor 203 extends from the feed-in ground terminal 205 along a second direction O2 perpendicular to the first direction O1 , and has a fourth width W4 parallel to the first direction O1, a fifth width W5 adjacent to the fourth width W4, and a sixth width W6 adjacent to the fifth width W5, wherein compared to the The second width W2, the third width W3, the fifth width W5, and the sixth width W6, the first width W1 and the fourth width W4 are closer to the signal feed-in terminal 204 and the feed-in ground respectively end 205, and the first width W1 is smaller than the second width W2, the second width W2 is smaller than the third width W3, and the fifth width W5 is smaller than the fourth width W4 and the sixth width W6. The ratio of the second width W2 to the third width W3 is between 0.75 and 0.8, and the ratio of the fifth width W5 to the sixth width W6 is between 0.75 and 0.8. The first width W1 is smaller than the second width W2, the second width W2 is smaller than the third width W3, the fourth width W4 is larger than the fifth width W5, and the fifth width W5 is smaller than the fifth width W5. The sixth width W6, the third width W3 is slightly longer than the sixth width W6, and the second width W2 is slightly longer than the fourth width W4.

In a preferred embodiment, the conductor extension 2032 further includes a conductor extension branch 2033 extending from the feed-in ground terminal 205 along a third direction O3 opposite to the first direction O1, wherein the conductor extension branch 2033 It has a seventh width W7, and the seventh width W7 is 1/3 times of the sixth width W6.

In a more preferred embodiment, the seventh width W7 is at least 1/3 or less of the sixth width W6.

In addition, the conductor extension portion 2032 also has a side edge R3, and there is an eighth width W8 between the side edge R3 and a terminal edge reference line AX3 of the terminal edge R2, and the eighth width W8 is at least equal to or greater than the sixth width W6.

The first radiation conductor 202 gradually widens from the signal feeding end 204 along a first direction O1, and extends to a first position P1. The feeding ground terminal 205 is adjacent to the signal feeding terminal 204 via a first gap S1. The second radiation conductor 203 gradually widens from the feed-in ground terminal 205 along a second direction O2 perpendicular to the first direction O1, and extends to a second position P2. The conductor extension 2032 extends from the feed-in ground terminal 205 to a third position P3 along the first direction O1. The first radiation conductor 202 and the second radiation conductor 203 are trapezoidal, and the first radiation conductor 202 and the second radiation conductor 203 are electrically insulated from each other.

As shown in FIG. 2 , there is a first length L1 between the conductor extension branch 2033 , the second radiation conductor 203 and the second radiation conductor extension 2031 , and a length from the feed-in ground terminal 205 There is a second length L2 between the center and the third position P3 of the conductor extension 2032 , wherein the second length L2 is less than 1/3 or more of the first length L1 .

In a preferred embodiment, the second length value L2 is 1/5 of the first length value L1.

In addition, the first radiating conductor 202 includes a first initial extension portion I1 related to the signal feed-in end 204, and a first first extension portion I1 located between the first initial extension portion I1 and the first position P1. Path section D1. The second radiating conductor 203 includes a second initial extension portion I2 relative to the feed-in ground terminal 205, and a second path portion D2 between the second initial extension portion I2 and the second position P2. . The signal feeding end 204 and the first extension portion I1 together have a side edge R1 adjacent to the conductor extension portion 2032 . The first path portion D1 has a terminal edge R2 adjacent to the side edge R1. The first gap S1 is located between the terminal edge R2, the side edge R1, the second initial extension portion I2, the feed-in ground terminal 205 and the conductor extension portion 2032, wherein the area of the first path portion D1 approximately equal to the area of the second path portion D2.

In a preferred embodiment, the first path portion D1 has at least one right-angle turn, and the second path portion D2 also has at least one right-angle turn.

The antenna structure 200 further includes a first radiation conductor extension 2021 and a second radiation conductor extension 2031, wherein the first radiation conductor extension 2021 extends from the first position P1 along the second direction O2, and the The second radiation conductor extension 2031 extends from the second position P2 along a third direction O3 opposite to the first direction O1. There is a first turning point between the first radiation conductor 202 and the first radiation conductor extension 2021 , wherein the first turning point has a first inner angle θ2. There is a second turning point between the second radiation conductor 203 and the second radiation conductor extension 2031 , wherein the second turning point has a second inner angle θ3.

In a preferred embodiment, the first inner angle θ2 and the second inner angle θ3 are between 90° and 105°.

In a preferred embodiment, the first inner angle θ2 and the second inner angle θ3 are 95°.

The first radiation conductor extension 2021 and the second radiation conductor extension 2031 respectively have a ninth width W9 and a tenth width W10, wherein the ninth width W9 is slightly longer than the tenth width W10, and The widths W9, W10 are smaller than the first width W1 and the fifth width W5.

In addition, the first radiation conductor 202 has a first length D'1, and the second radiation conductor 203 has a second length D'2, wherein the first length D'1 is equal to the second length D'1. Length D'2. The first radiation conductor extension 2021 has a third length D'3, and the second radiation conductor extension 2031 has a fourth length D'4, wherein the third length D'3 is equal to the Fourth length D'4. The first length D'1, the second length D'2, the third length D'3 and the fourth length D'4 are used to determine the operating frequency of the antenna structure 200.

In a preferred embodiment, the third length D'3 is 1/3 of the first length D'1, and the fourth length D'4 is 1/3 of the second length D'2 /3.

Furthermore, the antenna structure 200 includes a second space S2, a third space S3, a fourth space S4 and a Fifth space S5. The second gap S2 is disposed between the second radiation conductor 203 , the first radiation conductor 202 and the signal feeding end 204 , and communicates with the first gap S1 . The third gap S3 is disposed between the second radiation conductor 202 and the third position P3, and communicates with the first gap S1. The fourth gap S4 is disposed between the first radiation conductor 202 , the second radiation conductor 203 and the first radiation conductor extension 2021 , and communicates with the second gap S2 . The fifth gap S5 is disposed between the second radiation conductor 203 and the first radiation conductor extension 2031 .

The second radiation conductor 203 is perpendicular to the conductor extension 2032 and parallel to the first radiation conductor extension 2021 . The first radiation conductor 202 is parallel to the second radiation conductor extension 2031 . The first radiation conductor extension 2021 is parallel to the second radiation conductor 203 . The second radiation conductor extension 2031 is parallel to the first radiation conductor 202 . The first radiating conductor 202 and the second radiating conductor 203 are trapezoidal and each have a gradually wider trapezoidal path, and the conductor extension 2032, the first radiating conductor extension 2021 and the second radiating conductor The extension part 2031 is quadrangular.

The first gap S1 has a first distance D5 between the terminal edge R2 and the second start extension I2, and has a distance between the conductor extension 2032 and the side edge R1. - a second distance D6. The second gap S2 has a third distance D7 and a fourth distance D8 between the signal feeding end 204 and the second radiation conductor 203, wherein the second distance D6 is smaller than the first A distance D5, the third distance D7 is smaller than the fourth distance D8, the second distance D6 is smaller than the fourth distance D8, and the third distance D7 is smaller than the first distance D5.

In a preferred embodiment, the second distance D6 is approximately equal to 1/6 of the first distance D5.

In a more preferred embodiment, a first distance ratio of the third distance D7 to the first distance D5 is 1/3, and a second distance ratio of the second distance D6 to the fourth distance D8 is also 1/3.

Moreover, it can also be seen from FIG. 2 that the first radiation conductor 202 and the first radiation conductor extension 2021 generate a current path (not shown) extending along the first direction O1 and along the second direction O2. , and the first radiation conductor 202 and the first radiation conductor extension 2021 are used to receive horizontally polarized signals. The second radiation conductor 203 and the second radiation conductor extension 2031 generate a current path (not shown) extending along the second direction O2 and along the third direction O3, and the second radiation conductor 203 and The second radiating conductor extension 2031 is used for receiving vertically polarized signals.

Please refer to FIG. 3 , which is a front view of an antenna structure 300 according to a third embodiment of the present invention. The antenna structure 300 includes a substrate 301, a signal feed-in terminal 304, a feed-in ground terminal 305, a first radiation conductor 302, a second radiation conductor 303, a first radiation conductor extension 3021, a first conductor The extension part 3022, a second radiation conductor extension part 3031, a second conductor extension part 3032 and a conductor extension branch part 3033, wherein the signal feed-in end 304, the feed-in ground end 305, the first radiation conductor 302, the The second radiation conductor 303, the first radiation conductor extension 3021, the first conductor extension 3022, the second radiation conductor extension 3031, the second conductor extension 3032 and the conductor extension branch 3033 are all arranged on the substrate 301 on.

The antenna structure 300 includes a signal feed-in end 304; a first radiation conductor 302, which gradually widens from the signal feed-in end 304 along a first direction O1, and extends from a first initial extension portion I1 to a first A position P1; a feed-in ground terminal 305, adjacent to the signal feed-in terminal 304 through a gap S; a second radiation conductor 303, from the feed-in ground terminal 305 along a direction perpendicular to the first direction O1 The second direction O2 gradually widens and extends from a second initial extension portion I2 to a second position P2; and a conductor extension portion 3032 extends from the feed-in ground terminal 305 to a first direction O1 along the first direction O1. Three positions P3, wherein the first radiation conductor 302 and the second radiation conductor 303 are trapezoidal.

The first radiation conductor extension 3021 extends from the first position P1 along the second direction O2, and the second radiation conductor extension 3031 extends from the second position P2 along a third direction opposite to the first direction O1 O3 extended. There is a first turning point between the first radiation conductor 302 and the first radiation conductor extension 3021 , wherein the first turning point has a first inner angle θ2. There is a second turning point between the second radiation conductor 303 and the second radiation conductor extension 3031 , wherein the second turning point has a second inner angle θ3.

In a preferred embodiment, the first inner angle θ2 and the second inner angle θ3 are between 90° and 105°.

In a preferred embodiment, the first inner angle θ2 and the second inner angle θ3 are 95°.

The first conductor extension 3022 extends from the first radiation conductor 302 along a fourth direction O4 opposite to the second direction O2, and has a third turning point between the first radiation conductor 302, wherein the first radiation conductor 302 The three turns have a third inner angle θ4, and the conductor extension 3022 is in the shape of a rectangle.

The conductor extension branch 3033 extends from the second radiation conductor 303 along the first direction O1, and has a fourth turning point with the second radiation conductor 303, wherein the fourth turning point has a fourth inner angle θ5 , and the conductor extension branch 3033 is also in the shape of a rectangle.

In a preferred embodiment, the third inner angle θ4 and the fourth inner angle θ5 are 90°.

In addition, it can also be seen from FIG. 3 that there is a fifth turning point between the conductor extension portion 3032, the feeding ground terminal 305, and the second radiation conductor 303, wherein the fifth turning point has a fifth turning point. The inner angle θ6, and the fifth inner angle θ6 is at least equal to or greater than 90°.

In a preferred embodiment, the fifth inner angle θ6 is 90°.

The first radiation conductor 302, the first radiation conductor extension 3021 and the first conductor extension 3022 are used to receive horizontally polarized signals, and the second radiation conductor 303, the conductor extension branch 3033 and the second radiating conductor extension 3031 are used for receiving vertically polarized signals.

Please refer to FIG. 4(a) to FIG. 4(c), which are front views of the antenna structure 300 from different angles according to the third embodiment of the present invention. 4(a) to 4(c) adjust the amount of horizontally polarized and vertically polarized signals that the antenna structure 300 can receive by changing the angle of the antenna structure 300 according to the third embodiment of the present invention. FIG. 4( a ) is the antenna structure of the third embodiment of the present invention, which has the ability to receive 50% horizontally polarized signals and 50% vertically polarized signals. Fig. 4(b) and Fig. 4(c) rotate the antenna structure 300 of the third embodiment of the present invention 10° and 40° to the left respectively, so as to change the ability of the antenna structure 300 to simultaneously receive horizontally polarized signals and The ratio of the vertically polarized signal can easily adjust the ratio of the horizontally polarized signal and the vertically polarized signal under different environments or application conditions.

In summary, the object of the present invention is to provide an antenna structure that can be changed by changing the antenna structure according to the requirements of the product (for example, in the environment where most horizontally polarized signals or most vertically polarized signals are used) The angle can be easily adjusted and corrected, and the operating frequency of the antenna structure can be easily adjusted by changing the length of the radiation conductor. In addition, the signal feed-in method of the antenna structure of the present invention is that one end of the 50 ohm (Ω) cable is directly welded on the signal feed-in end, and the other end of the cable can be arbitrarily extended to the radiation (RF) Signal module side. The present invention directly prints the antenna structure on the circuit board, which not only saves the mold cost and assembly cost of the general three-dimensional antenna structure, but also avoids the problem that the general three-dimensional antenna structure is easily deformed.

In addition, the antenna structure of the present invention can be independently and wall-mounted to operate in the system, and the frequency band can be easily adjusted, so it can save costs, and can be applied to wireless network devices in various environments.

Furthermore, since the antenna structure of the present invention has both the horizontal polarization component and the vertical polarization component, it can receive signals of the vertical component and the horizontal component in any direction in the system at the same time, and no special arrangement is required to receive the signal. In addition, the antenna structure of the present invention can also adjust the dual polarization characteristics of the antenna structure by adjusting the angle of the antenna structure, that is, adjust the ratio of the required horizontal polarization component to the vertical polarization component, so as to facilitate simultaneous reception of the system The signal of the vertical component and the horizontal component in any direction.

Although this case is disclosed as above with preferred embodiments, it is not used to limit the scope of the present invention. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall belong to the present invention The scope of the claims.

Symbol Description

100, 200, 300 Antenna Structures

101, 201, 301 Substrate

102, 103, 202, 203, 302, 303 Radiating conductor

2021, 2031, 3021, 3031 Radiating conductor extension

2032, 3022 Conductor extension

2033, 3033 conductor extension branch

104, 204, 304 signal feed-in terminal

105, 205, 305 feed into the ground terminal

106 cables

AX1 conductor extension path reference line

AX2 Feed Cable Connection Reference Line

AX3 terminal edge guide

S, S1～S5 gap

D1～D2 path part

D’1～D’4 Length

D5～D8 distance

I1～I2 initial extension

P1～P3 position

θ1～θ6 included angle

R1 side edge

R2 terminal edge

R3 side edge

W1～W10 Width

O1～O4 direction.

Claims (10)

1. a kind of antenna structure, comprising：

One signal feed side；

One first radiation conductor, extends from the signal feed side along a first direction, and has vertical One first width for being adjacent to the signal feed side in the first direction, it is adjacent to first width One second width and be adjacent to one the 3rd width of second width；

One feed-in earth terminal, mono- first spaces of Jing and adjacent to the signal feed side；And

One second radiation conductor, from the feed-in earth terminal along perpendicular to the one second of the first direction Direction extends, and with being adjacent to the one the 4th of the feed-in earth terminal parallel to the first direction Width, one the 5th width for being adjacent to the 4th width and it is adjacent to the one of the 5th width Six width, wherein:

First width is less than second width, and second width is less than the 3rd width, and this , less than the 4th width and the 6th width, second width is for the 3rd width for five width One first ratio is between 0.75 and 0.8, and the 5th width is for the one of the 6th width Second ratio is between 0.75 and 0.8.

2. a kind of antenna structure, comprising：

One signal feed side；

One first radiation conductor, extends to one first along a first direction from the signal feed side Put；

One feed-in earth terminal, mono- first spaces of Jing and adjacent to the signal feed side；

One second radiation conductor, from the feed-in earth terminal along perpendicular to the one second of the first direction Direction extends to a second place；And

One conductor extension, extends to one threeth position along the first direction from the feed-in earth terminal, Wherein first radiation conductor is trapezoidal, gradually broadens from the signal feed side along the first direction, Second radiation conductor is trapezoidal, gradually broadens from the feed-in earth terminal along the second direction.

3. antenna structure as claimed in claim 2, wherein：

First radiation conductor comprising be relevant to the signal feed side one first initial extension, And the first path part between the first initial extension and the first position；

Second radiation conductor comprising be relevant to the feed-in earth terminal one second initial extension, And one second path sections between the second initial extension and the second place；

The signal feed side and the first initial extension have together and are adjacent to the conductor extension A lateral edges；

The first path part has a terminal edge of the adjacent lateral edges；And

First space be located at the terminal edge, the lateral edges, the second initial extension, should Between feed-in earth terminal and the conductor extension.

4. antenna structure as claimed in claim 3, wherein：

There is between the signal feed side and the feed-in earth terminal feed-in cable to connect reference line；

There is between the signal feed side and the first position conductor extension path to refer to line segment, Wherein the feed-in cable connects reference line and the conductor extension path and joins with one with reference between line segment Angle is examined, this is with reference to angle between 120 ° and 140 °；

The antenna structure also includes one first radiation conductor extension, and first radiation conductor extends Portion extends from the first position along the second direction；

The antenna structure also includes one second radiation conductor extension, and second radiation conductor extends Portion extends from the second place along the third direction in contrast to the first direction；

With one first turnover between first radiation conductor and the first radiation conductor extension, Wherein first turnover is with one first within angle more than 90 °；And

With one second turnover between second radiation conductor and the second radiation conductor extension, Wherein second turnover is with one second within angle more than 90 °.

5. antenna structure as claimed in claim 4, also includes：

One substrate, wherein the signal feed side, the feed-in earth terminal, first radiation conductor and Second radiation conductor, the first radiation conductor extension and the second radiation conductor extension, And the conductor extension is all disposed within the substrate；

One Second gap, is arranged at second radiation conductor, first radiation conductor and the signal Between feed side, and communicate with first space；

One the 3rd space, is arranged between first radiation conductor and the 3rd position, and with this First space communicates；

One the 4th space, be arranged at second radiation conductor, first radiation conductor and this first Between radiation conductor extension, and communicate with the Second gap；And

One the 5th space, be arranged at second radiation conductor and the second radiation conductor extension it Between.

6. antenna structure as claimed in claim 3, wherein：

First radiation conductor is electrically insulated with second radiation conductor；And

First space is to adjust the impedance matching of the antenna structure.

7. antenna structure as claimed in claim 4, wherein：

Second radiation conductor has one first length, perpendicular to the conductor extension and parallel In the first radiation conductor extension；

First radiation conductor has one second length, parallel to the second radiation conductor extension； And

The conductor extension, the first radiation conductor extension and the second radiation conductor extension All it is in quadrangle.

8. antenna structure as claimed in claim 7, wherein：

The first radiation conductor extension has one the 3rd length, and second radiation conductor extends Portion has one the 4th length；

3rd length less than first length 1/3；

4th length less than second length 1/3；And

First length, second length, the 3rd length and the 4th length are to determine this The operating frequency of antenna structure.

9. antenna structure as claimed in claim 5, wherein：

First radiation conductor has a width at the signal feed side；

First space between the terminal edge and the second initial extension with one first away from From, and there is between the conductor extension and the lateral edges second distance；

The Second gap is with the 3rd between the signal feed side and second radiation conductor Distance, and equal to one the 4th distance of the width；

3rd distance is 1/3 for one first distance rates of first distance；And

The second distance is 1/3 for a second distance ratio of the 4th distance.

10. a kind of antenna structure, comprising：

One signal feed side；

One first radiation conductor, extends from the signal feed side along a first direction, to be formed gradually One first wide trapezoidal path；

One feed-in earth terminal, mono- spaces of Jing and adjacent to the signal feed side；And

One second radiation conductor, from the feed-in earth terminal along perpendicular to the one second of the first direction Direction extends, to form one second gradually wide trapezoidal path.